this disclosure policy also benefits land lords by reducing nuisance complaints regarding secondhand smoke. specifically, we'll hear from some republics -- reps from the department of public health, this requires landlords disclose units as smoke free or smoking optional. no leases can be changed midway through tenancy and thanks to the tenant associations for advocating strongly. owners must include the smoking designation in the unit in the residential vacancy listings and to any applicant prior to entering into a lease agreement. no. 3, owners must provide a list to rental applicants who are offered the unit showing the designation of all units in the building that are smoking optional. this list will be updated and available to all tenants. lastly, owners of -- this is a phase in process built in. owners of smaller buildings of 50 units or less have one year to apply and owners of 50 units or above have two years to comply. this brings san francisco into line with a number of other cities that have recently passed ordinance, oakland, belmont and novato have recently passed legisl